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2-pole Magnet Adjustment; Focus Vr Adjustment; Centering Magnet Adjustment; Defocus Adjustment (blue) - Sony KP-51HW40 Service Manual

Color rear video projector.
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3-5. FOCUS VR ADJUSTMENT

1. Set generator to crosshatch.
2. Cover the both red and blue picture lenses with the lens caps
to show only the green color.
3. Turn the green focus VR on the focus block to adjust to the
optimum focus point with the crosshatch signal.
4. Cover the both green and blue picture lenses with the lens caps
to show only the red color.
5. Turn the red focus VR on the focus block to adjust to the
optimum focus point with the crosshatch signal.
6. Cover the both green and red picture lenses with the lens caps
to show only the blue color.
7. Turn the blue focus VR on the focus block to adjust to the
optimum focus point with the crosshatch signal.
8. After adjusting the items 3-4. Focus Lens Adjustment, 3-6. 2-
Pole Magnet Adjustment and 3-7. 4-Pole Magnet Adjustment,
adjust again to the optimum focus point.
Note: Instead of items 2, 4 and 6, you can cut off the unnecessary
color beams by controlling the service mode 2150P-2 1
RGBS.
B
Lens
Fig. 3-5

3-6. 2-POLE MAGNET ADJUSTMENT

1. Set the picture mode to"Pro" and picture to MAX.
2. Receive the Dot signal.
3. Cover the both red and blue picture lenses with the lens caps
to show only the green color.
4. Turn the green focus VR on the focus block to the left and set
to overfocus to enlarge the spot.
5. Adjust 2-pole magnet so that the bright spot should be
centered.
6. Align the green focus VR and set for just (precise) focus.
7. Perform the same alignment for red and blue.
Note: Instead of item 2 you can cut off the unnecessary color
beams by controlling the service mode 2150P-2 1 RGBS.
Scanning line visible.
A
Minimize both A and B.
Center of crosshatch
Fig. 3-6
Fig. 3-7

3-7. CENTERING MAGNET ADJUSTMENT

1. Set the picture mode to "Pro".
2. Receive the monoscope signal.
3. Cover the both red and blue picture lenses with the lens caps
to show only the green color.
4. Adjust the green centering magnet to put the center of the
monoscope signal to the center of the screen.
5. Adjust the red centering magnet in the same way.
6. Adjust the blue centering magnet in the same way.
Note: Instead of item 2 you can cut off the unnecessary color
beams by controlling the service mode 2150P-2 1 RGBS.
3-8. 4-POLE MAGNET ADJUSTMENT
1. Set the picture mode to"Pro" and picture to MAX.
2. Receive the Dot signal.
3. Cover the both red and blue picture lenses with the lens caps
to show only the green color.
4. Turn the green focus VR on the focus block to the right and set
the spot will become smaller.
5. Adjust the 4-Pole Magnet so that the spot becomes round for
green and red.
6. Adjust blue spot to an oval shape X:Y=1:1.4
Note: Instead of item 2 you can cut off the unnecessary color
beams by controlling the service mode 2150P-2 1 RGBS.
Use the center dot

3-9. DEFOCUS ADJUSTMENT (BLUE)

Note: Please adjust the blue dot to be slightly larger than red and
green dots. This adjustment provides a more pleasing picture
to the customer.
1. Select the picture mode to "Pro".
2. Receive the Dot signal.
3. Cover the both red md green picture lenses with the lens caps
to show only the blue color.
4. Turn the blue focus VR on the focus block to right to make the
round dot elipical.
5. Check flare with high luminace signal, make sure flare is
minimal while dot shape is elipical.
6. Set generdtor to all white signal and check uniformity.
Note: Instead of item 3 you can cut off the unnecessary color
beams by controlling the service mode 2150P-2 1 RGBS.
– 13 –
KP-51HW40/57HW40
RM-Y909
1.5.
-
x
/
y
x : y = 1:1.2 (BIue)
x : y = 1:1 (Green, Red)
Fig. 3-8
RM-Y909

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  • #1202186 Sep 19, 2018 12:39:
    I CAN'T GET AN ANSWER TO A SIMPLE QUESTION FROM THE SERVICE MANUAL: INSTRUCTIO​NS ON HOW TO REPLACE THE LAMP ON MT REAR PROJECTION SONY TV KP51HW40